Ohio
/oʊˈhaɪoʊ/
"ohio" is a 4-letter English headword indexed on PlainSpell.
The verdict
“Ohio” is a regularly-used English word, ranked #2,455 in English word frequency and used as a proper noun.
- #2,455
- frequency rank, English
- 4
- letters
- 4
- tracked misspellings
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A state of the United States. Capital and largest city: Columbus.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | Ohio |
| Language | English |
| Part of speech | Proper noun |
| IPA | /oʊˈhaɪoʊ/ |
| Letters | 4 |
| Frequency rank | #2,455 |
| Misspellings tracked | 4 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “Ohio” sits in English frequency
Spelling & Dictionary Insight
The English entry for Ohio is 4 letters long, classified as a proper noun, and transcribed in the International Phonetic Alphabet as /oʊˈhaɪoʊ/. Corpus data places it at rank #2,455 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 11 distinct senses for this headword, so context determines which meaning a reader should apply.
Our generated misspelling index lists 4 likely wrong-spelling variants for Ohio, with forms such as "hoio", "ohhio", and "ohoi". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 20 confusable-pair relationships, "oi", "oo", "oil", and more, where similar look or sound leads writers to substitute one word for another in context.
Etymologically, the entry records: From Seneca Ohi꞉yoʼ, a proper name derived from ohi꞉yo꞉h (“good river”). The name of the Allegheny river, which the Lenape and Iroquois considered to be part of the same single river as the Ohio, means the same thing in Unami. The correct English form is Ohio, spelled O-H-I-O.
Definition
- 1A state of the United States. Capital and largest city: Columbus.
- 2A river in the United States, flowing 981 miles from the confluence of the Allegheny and Monongahela at Pittsburgh, Pennsylvania through Ohio, West Virginia, Kentucky, Indiana and Illinois along state borders and emptying into the Mississippi at Cairo, Illinois.
- 3Ellipsis of Ohio University.
- 4A locale in the United States; named for the state:
- 5A locale in the United States; named for the state:
- 6A locale in the United States; named for the state:
- 7A locale in the United States; named for the state:
- 8A locale in the United States; named for the state:
- 9A locale in Canada:
- 10A locale in Canada:
- 11A locale in Canada:
Etymology
From Seneca Ohi꞉yoʼ, a proper name derived from ohi꞉yo꞉h (“good river”). The name of the Allegheny river, which the Lenape and Iroquois considered to be part of the same single river as the Ohio, means the same thing in Unami.
This word in other languages
Common misspellings
Also misspelled as: hoio,ohhio,ohoi,oiho
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of Ohio - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
How do you spell "Ohio"?
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Is PlainSpell free to use?
Using “Ohio”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is O-H-I-O - every other letter order is a misspelling in standard orthography.
- Say it as /oʊˈhaɪoʊ/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “oi” - see the side-by-side comparison. Ohio vs oi
- Browse more English words and confusable pairs in the same reference. English words
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.